Finding the Third Proportional to 425,648 and 634,780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   425,648 : 634,780.50 = 634,780.50 : x
2. Step 2: Convert to fraction form
   425,648/634,780.50 = 634,780.50/x
3. Step 3: Cross multiply
   425,648x = 634,780.50 × 634,780.50
4. Step 4: Simplify right side
   425,648x = 402,946,283,180.25
5. Step 5: Solve for x
   x = 402,946,283,180.25/425,648
6. Step 6: Final answer
   x = 946,665.52